Fix another typo in janitor GHA

PiperOrigin-RevId: 560173228

.github/workflows/janitor.yml

@@ -10,15 +10,15 @@ jobs:
   stale-prs:
     name: Close Stale Copybara PRs
     runs-on: ubuntu-latest
+    env:
+      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
-      run: |
-        set -ex
-        STALE_PRS=$(gh pr list --author "app/copybara-service" --limit 500 \
-            --json "number" --search "updated:<=$(date --date="-7 day" +%F)" \
-          | jq ".[].number")
-        for pr in $(STALE_PRS); do
-          echo "Closing #$pr..."
-          gh pr close --comment "Auto-closing Copybara pull request" --delete-branch "$pr"
-        done
-      env:
-        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - run: |
+          set -ex
+          STALE_PRS=$(gh pr list --author "app/copybara-service" --limit 500 \
+              --json "number" --search "updated:<=$(date --date="-7 day" +%F)" \
+            | jq ".[].number")
+          for pr in $(STALE_PRS); do
+            echo "Closing #$pr..."
+            gh pr close --comment "Auto-closing Copybara pull request" --delete-branch "$pr"
+          done